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Finding the Fourth Proportional to 132,467.80, 198,701.70 and 85,773.40

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Solution

The fourth proportional to 132,467.80, 198,701.70 and 85,773.40 is: 128,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,467.80 : 198,701.70 = 85,773.40 : x
  2. Step 2: Convert to fraction form
    132,467.80/198,701.70 = 85,773.40/x
  3. Step 3: Cross multiply
    132,467.80x = 198,701.70 × 85,773.40
  4. Step 4: Simplify right side
    132,467.80x = 17,043,320,394.78
  5. Step 5: Solve for x
    x = 17,043,320,394.78/132,467.80
  6. Step 6: Final answer
    x = 128,660.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.